Feather dropping opinions needed

[macbrush]

The larger feathers seems drop quite symmetrically, but I can't be 100% sure, since Spencer doesn't let me inspect him that closely. But if I count them, left and right side flight feather are of the same number or difference by just 1 which he just dropped. And left and right flight feathers don't drop simultaneously, they drop about 1 to 2 days apart.

[Michael]

That's a molt. They don't necessarily drop at once but within +/-3 days usually, week tops. If you have left/right primaries of equal size but bent in opposite directions, that is the molt. Feather plucking isn't as perfect/symmetrical.

[macbrush]

Thanks, that's encouraging. Do they sometimes drops chest feather that much during a molt? I see increasingly chest feather dropping in the last 2 days, as I mentioned, Spencer dropped about 20 of those little feathers just today.

[Michael]

Sounds a bit heavy but not unreasonable. Can't rule out plucking 100% but sounds like a molt.